Marking die and holder



Oct. 23, 1934. A, J SCHOLTES 1,978,330

MARKING DIE AND HOLDER Filed June 2, 1934 2 Sheets-Sheet l Oct. 23, 1934. A, J. SCHOLTES 1,978,330

MARKING DIE AND HOLDER Filed June 2, 1934 2 Sheets-Sheet 2 Patented Oct. 23, 1934 unirsi) STATES PATENT OFFICE 15 Claims.

The present invention relates to a die adapted particularly for marking objects to take the place of name plates and the like and for impressing upon the objects desired names, numbers and the 6 like which are necessary and desirable on manufactured articles and which heretofore have been so marked only by use of expensive and complicatedmachines, and requiring additional steps inthe operation of the marker.

v An object of the present invention is to provide a marking die adapted for use directly upon objects of any configuration, such as round, flat and the like for marking the objects as they are nished in a screw machine, or other type of machine without removing the articles therefrom.

Another object of .the inventionis to provide an improved construction of marker roll with an interrupted,` depressed or cut away peripheral portion of desired extent admitting of the stopping of the marker roll after it has performed its function and wherein the marker roll is driven by frictional contact at its periphery with the object so that after marking the roll will not be further driven and consequently cannot mar or injure the impression or the work and so that the marker roll itself will be protected. v

The invention also aims at the` provision of certain detail constructions wherein the marker roll is yieldingly held in `an inoperative position after it has marked the work or article, and wherein the marker roll may be applied to different types of work or articles which in some instances may require inking of the characters of the marker roll.

The invention also contemplates an improved support or holder for the `marking roll admitting of the application of the roll to the workin desired angular relations about the axis thereof and which also admits of the application of the mark- 40 er roll at the desired time during the manufacture of the article.

With the foregoing and other objects in View,"

ing the spring casing in section `on the line 2--2 of Figure 1.

(Cl. lOl- 28) Figure 3 is a detail side elevation of the marker roll or die.

Figure 4 is an edge view of one of the component discs of the roller or die.

Figure 5 is a side elevationof the marking dei vice reverse to the showing in Figure 2.

Figure 6 is a fragmentary side elevation of'a screw machine showing the marking device as applied to the work. K

Figure 7 is a fragmentary view of the same showing the marking device immediately subsequent to making an impression on the work.

Figure 8 is a likerview showing the marking device disposed below the work and in contact therewith ready to make the impression.

Figure 9 is a similar View showing the roller or die as applied to one sideof thework and about to 'make the impression. l

Figure 10 is a fragmentary enlarged section taken through the central portion of the die spindle and its support, showing the stop means for holding thedie in position of rest, and

Figure 11 is a fragmentary perspective view, enlarged of an edge portion of one of theV die discs showing the cammed and roughened peripheral surface for frictional vcontact with the work to start the die in operation.

Referring now to the drawings, 15 designates a support of any `suitable constructionor conguration adaptable to the particular machine or holder on which the marking device isto be mounted. In the present, instance ythe holder has a relatively long shank 1 6 which, as shown in Figure 6, is adapted to be secured by a clamping nut and bolt` 1'7 to a vertical arm o1' standard 18 having averticalslot 19 therein through which the bolt 17 passes for adjustably securing the shank 16 at the desired height on the standard 18. The bolt 17 also carries a clamping plate 20 or the like for firmly supporting the holder 15 in the desired angular relation upon the stands ard 18. rIfhe standard 18 may be mounted upon the upperplate 21Y of a cross slide which is mounted in suitable tracks upon a cross slide` support 22 carried by a screw table 23 or the like.

The upper plate portion 21 of the cross slide has a depending lug 24 disposed in vthreaded engagement upon a screw 25 mounted to turn in the support 22 and provided With ahand wheel 26 by means of which the screw 25 may be turned for adjusting the upper part 21 of the cross slide. The screw table` 23 carries the usual standard 27 on which is supported a spindle 28 carrying the work 29.

The work 29 is shown as of cylindrical form and is turned in any suitable manner as by means of the pulley 30 driven by a belt 31.

The outer end of the die holder l5 is of suitable thickness to support a die spindle 32, and the spindle 32 has intermediate its ends an annular groove 33 into which projects a pin 34 having a screw shank 35 threaded through one side of the holder 15, as shown in Figures 1 and 10. The spindle 32 is also provided with a stop pin 36 disposed in the annular groove 33 and which is adapted to engage the pin 34 to limit the turning of the spindle 32 in one direction. A coil spring 37 has one end iixed to one end of the spindle 32, as shown in Figure 2, and has its other end xed upon a pin 38 secured in the adjacent face of the holder 15, so as to urge the spindle 32 to turn in one direction and to yieldingly resist turning in the opposite direction. The spring 37 is protected in a suitable housing 39 secured by screws or the like against the side of the support 15 and which is centrally apertured to receive the reduced adjacent end of the spindle 32.

The other end of the spindle 32 may be stepped to support a die or marking roll, and this die may be made in any desired number of pieces, the body of the die being shown in the present instance as comprising a plurality of discs 40 secured together in face engagement on the spindle 32, and clamped on the latter by means of the nut 41 threaded on the outer end of the spindle. Suitable washers 42 may be provided on the spindle 32 at opposite sides of the die 40.

The die 40 is provided on its periphery with suitable projections 43 which may be letters, numbers or other suitable markings or configurations and which extend through a desired circumferential portion of the die. The peripheral portion of the die is recessed, cut away or depressed as shown at 44, so as to provide a spaced peripheral portion to the die which is out of circumferential line With the remainder of the die so that when the die is driven by contact at its periphery with the work the die will cease to operate when the dwell or recess 44 is reached.

As shown particularly in Figure 11, the starting side of the die Which rst comes into Contact with the work when the die is advanced against the work, is shown at 45, and the peripheral portion is slightly cammed or reduced so as to gradually take up the frictional contact with the work and insure an even pick up of the die when it is brought against the work. To assist in the frictional contact of the die with the work, the peripheral face of the die at said cam portion 45 is roughened, as at 46 throughout a desired extent to insure traction or frictional contact for starting the rotation of the die.

Of course, the marker may be used without an inking device but there are instances Where it is desirable that the characters 43 on'the periphery of the die be inked. For this purpose, an inking roller 47 isl detachably mounted by means of a screw 48 against the side of the holder 15.

The roller 47 is provided with a surface pad 49 adapted to absorb and maintain a body of ink or other suitable marking iiuid. The inking roller 47 is mounted in any one of a desired number of sockets 50 provided in the holder 15, as shown in dotted lines in Figures 2 and 5, so as to disposethe inking roller in the desired angular relation about the axis of the die.

In operation, with reference to Figure 6, after the work 29 has been iinished to the ldesired extent for applying the marking thereto, the hand wheel 26 may be manipulated for moving the cross slide to advance the die toward the work. As shown by the arrow, the work 29 rotates in one direction and as soon as the die 40 is brought into engagement with the work, the starting cam or edge 45 of the die iirst engages the peripheral portion of the work and the die is started turning with the work in the direction shown by the arrow in Figure 6. This operation of the die 40 is against the tension of the spring 37 and the spring is thus Wound under desired tension as the die is continued for rotation. The characters 43 on the die are brought into contact with the peripheral surface of the Work 29 and the characters are impressed in the work. As soon as the die has turned sufliciently to completely mark the work, the recess or dwell 44 in the peripheral surface of the die is brought opposite the work, so that contact between the work and the die ceases as regards the driving or turning of the die, and the spring 37 holds the die from over-running to such extent as would cause the die to again come into driving contact with the Work.

To prevent injury to the die and the Work, a rawhide abutment 51 may be inserted in the finishing end of the recess 44, so as to engage the work and yieldingly hold the die from turning, the pressure of the spring 37 holding the abutment 51 against the work until the die with its holder 15 is retracted from the work. As soon as the die is retracted from the work, the spring 37 returns the die or roller to normal position, opposite to that shown in Figure 10. The stop 36 will hold the spring and die from over-running at the end of the impression and when the die is turned backwardly to normal position for engaging a new piece of work, the pin 36`bears against the opposite side of the pin 34. As shown in Figures 8 and 9, the holder 15 With its die roller 40 may be disposed with reference to the work 29 so as to engage the latter at the top, bottom or at the side in any axial angularly disposed position desired, and the g, l

die roller may be mounted on the spindle 32 in different positions so as to dispose the entering cam or end 45 of the die in the necessary position to start the operation of the die roller when it is brought into contact with the work. This adjustment is necessary as the direction of rotation of the work 29 may be changed and the different sides of the work 29 will naturally drive the roller in opposite directions.

The spring 37 is reversible on the spindle 32 and Oi course the stop pins may be otherwise dis- Y posed than as shown to accomplish the desired result.

f When the die body 40 is made up, as shown, of

a plurality of discs an alining pin 52 is positioned (-1 1 It is obvious that various changes and modifications may be made in the details of construction and design of the above specically described embodiment of this invention without departing from the spirit thereof, such changes and modifications being restricted only by the scope of the following claims.

What is claimed istl; A die comprising a cylindrical body having peripheral characters and adapted to be engaged against a moving piece of work to turn the die and mark the work, said cylindrical body having a depressed peripheral portion at the end of the characters to register with the work and free the die therefrom, yielding means for urging the die backwardly against the work, and a resilient buffer on the die at the end of the depressed peripheral portion of the die to prevent injury to the die and Work.

2. A marking device comprising a holder adapted to be mounted upon a `suitable support adjacent a piece of work, a rotary die mounted on the holder vand having characters on its periphery extending circumferentially of the die, said die having a i recessed peripheral portion at the end of the characters, said die with its holder and support adapted to be advanced against the piece of work while moving for frictionally engaging the die at its peripheral portion with the work, the die adapted to be turned by movement of the work to impress the characters in the surface of the work and adapted to be released from contact with the work when the depressed peripheral portion of the die registers with the work, means for yieldingly "i holding the die against over-running, and adjust- II die having a depressed peripheral portion at one side of the axis of the die and having impression characters on its periphery between the ends of the depressed portion whereby turning of the die by the work impresses the characters in the work and releases the die from turning when said depressed peripheral portion is reached, and reversible spring means disposed between the holder and the die adapted to be wound upon turning of the die by the work to yieldingly hold the die :against over-running and to return the die to normal position when released from the work.

4. A marking device comprising a holder, a spindle mounted in the holder, a die mounted on the spindle and having a peripheral portion with `1impressing characters and having a depression at one side of the axis of the die inthe periphery thereof, said die adapted to be engaged with a piece of moving work for turning the die and releasing the same when the depressed portion is brought into register with the work, a spring disposed between the spindle and-the holder for normally urging the spindle to turn in the direction opposite to the direction of driving the die by the work, and stop means disposed between the spindle ,'and the holder for limiting the turning of the spindle beyond a predetermined angular distance. 5. A marking device comprising a holder, a spindle mounted in the holder, stop means for limiting the turning of the spindle beyond a com- Slplete turn in either direction, a spring adjustably mounted upon the spindle and holder for yieldingly holding the spindle against turning in either direction, a cylindrical die adjustably fixed on the spindle adapted to be over-turned thereon for disposing the die relatively to the work, said die having peripheral characters at one side and a peripheral depression on its opposite side, said holder adapted to be advanced against moving work to contact the die therewith to turn the die and the spindle by movement of the work and impress the characters in the surface of the work, said die adapted to be disconnected from the work upon registry of the peripheral depression therewith and said spring adapted to yieldingly urge the die against the work for a return movement of the die, said stop means adapted to hold the die and spindle from over-running when released from the work.

6. A marking device comprising a holder, a cylindrical die mounted on the holder and having peripheral impression characters at One side and a peripheral depression at its opposite side, said die adapted to be advanced against a piece of moving work for Contact of the peripheral portion of the die with the work to turn the die by movement of the work, said die having a cam face at one end 0f the depression for gradually taking up movement of the work by the die and said depressed portion adapted to uncouple the die from the work, spring means between the holder and the die for yieldingly holding the same against advancement and to hold the die from turning against the work after the depressed portion is in register with the work, and stop means limiting the rotation of the die.

7. A marking device comprising a holder, means for supporting the holder for movement toward and from a piece of work, a rotary die mounted on the holder for engagement at its periphery against the work for co-operative movement therewith, said die having a depressed peripheral portion at one side and having impression characters on its periphery between the ends of the depressed portion whereby turning of the die impresses the characters in the work and releases the die when said depressed peripheral portion is reached, and adjustable means disposed between the holder and the die to yieldingly hold the die against over-running and to return the die to normal position when retracted from the work.

8. A die comprising a body having a contact surface portion for engaging a piece of work to operate the die by the movement of the work, said contact surface portion of the die body having an interrupted portion therein to free the die from the work after a predetermined movement of the die, said die body also having an initial working engaging peripheral portion between the interrupted portion and the contact surface portion to start movement of the die and obtain pressure vinitial contact with the work and a buffer at the m other end of the depression to prevent injury to the die and work by said backward pressure.

l0. A die comprising a body having a contact surface portion for engaging a piece of work to operate the die by the movement of the Work, said Contact surface portion of the die body having an interrupted portion therein to free the die from the Work after a predetermined movement of the die, means for automatically returning the die to normal position when the die` is removed from the Work, and means for adjusting the die relatively to its normal position.

l1. A die comprising a cylindrical body having peripheral characters and adapted to be engaged against a moving piece of Work to turn the die and mark the Work, said cylindrical body having a depressed peripheral portion at the end of the characters to register with the Work and free the die therefrom and having a cam work engaging portion leading to the characters for initially starting the feed and building up pressure between the Work and the die.

l2. A die comprising a cylindrical die body having three peripheral portions, one for marking characters, a second for freeing the Work and a third intermediate portion for engaging the Work.

13. A die comprising a cylindrical die body having peripheral portions on two diiferent radii, the peripheral portion of greater radius adapted to contact With the Work and having marking characters thereon and the peripheral portion of lesser radius adapted to free the die from the Work.

14. A die comprising a substantially cylindrical die body having peripheral portions of different radii providing a dWell for non-contact position between the die and the Work, a take up portion for initial engagement with the Work and a marking portion for engaging the Work.

l5. A die for application to Work having a continuously advancing surface to be marked, comprising a rotary cylindrical die body having marking characters on its periphery at one side of the axis of the die body and having Work releasing means at the other side of said axis admitting stopping of the die from rolling contact with the Work during the continuation of the movement of the Work without injury to the Work and die.

ALBERT J. SCHOLTES. 

